CN105706433B

CN105706433B - Relay, sound communication system, recording medium and trunking method

Info

Publication number: CN105706433B
Application number: CN201480060891.8A
Authority: CN
Inventors: 松岛久晃
Original assignee: Icom Inc
Current assignee: Icom Inc
Priority date: 2013-11-07
Filing date: 2014-10-31
Publication date: 2019-03-22
Anticipated expiration: 2034-10-31
Also published as: EP3068120B1; JP6610259B2; US10200539B2; HK1223486A1; JPWO2015068665A1; EP3068120A1; EP3068120A4; US20160255202A1; WO2015068665A1; CN105706433A

Abstract

A kind of sound communication system connecting relay and terminal installation via communication network and to carry out the management of the mutual communication of terminal installation in the priority of communication in relay side group is provided.Relay has network communication unit, control unit and precedence information storage unit.Network communication unit is communicated via communication network with multiple terminal installations.Control unit mutually forwards voice signal between the terminal installation for participating in communication session.In addition, control unit is when receiving the call signal that the terminal installation for participating in original communication session is appointed as to communication counterpart, in the case where the priority of the original communication session of the priority ratio of new communication session is high, the terminal installation for participating in original communication session is made to participate in new communication session.Terminal installation sends the voice signal that attached the forwarding target to voice signal and carry out specified forwarding target information to relay.

Description

Relay, sound communication system, recording medium and trunking method

Technical field

The sound communication system of the networks such as Wireless LAN is the present invention relates to the use of.

Background technique

In the past, as the equipment for carrying out the audio communication based on wireless mode, with analog signal or digital signal to work High frequency carrier for continuous time signal is modulated and the so-called wireless communication machine sent is mainstream.Wireless communication machine carries out 1 pair 1 of communication is basic function, it is also proposed that it is logical to have group between multiple wireless communication machines while communicated The wireless communication machine of telecommunication function.

In addition, as disclosed in Japanese Unexamined Patent Publication 2010-109506 bulletin, it is also proposed that be made of transponder etc. Wireless communication system (cluster wireless machine system).The system has the function of Priority Call, that is, if the communication request for having priority high (calling), the then wireless communication machine being even currently in communication (call) also can be carried out calling (communication).In the system In, wireless communication machine judges the priority of communication to switch communication.Specifically, high with priority by being changed to The corresponding repeater channel of communication request communicates to switch.

Citation

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2010-109506 bulletin

Summary of the invention

Problems to be solved by the invention

In above-mentioned cluster wireless machine system, when there is the high communication request of priority, need to be changed to relay accordingly Machine channel, therefore need to expend the time until the switching of communication is completed.In addition, within the system, although can be realized excellent First call function, but the channel (electric wave) of multiple repeaters is needed, therefore electric wave inefficient.In turn, complete in repeater channel In the case that portion is by use, it is difficult to which switching communicates.

The relay used the purpose of the present invention is to provide a kind of sound communication system and within the system, In, by connecting relay via communication network and as the terminal installation of communication equipment, and make in relay side The management that the mutual communication of terminal installation is carried out based on the priority of communication, thus, it is possible to switch to together in relay side The high communication of priority.

Means for solving the problems

Relay of the invention has: the network communication communicated via communication network with multiple terminal installations Portion, control unit and precedence information storage unit.Control unit establishes the end when receiving call signal from terminal installation The communication session that the terminal installation of end device and the communication counterpart specified by call signal is participated in, is participating in the communication meeting Voice signal is mutually forwarded between the terminal installation of words.Precedence information storage unit stores priority letter related with communication session Breath.In addition, control unit includes: priority determination unit, the terminal installation for participating in original communication session is appointed as receiving When the call signal of communication counterpart, the ring tone message of original communication session and this is determined based on precedence information The priority of number new communication session to be established, in the priority of the original communication session of the priority ratio of new communication session In the case where height, the control unit removes the terminal installation for participating in original communication session from original communication session, makes It participates in new communication session.

Program of the invention makes have the network communication unit and storage communicated via network with multiple terminal installations The computer of the relay of the storage unit of the precedence information for the communication session participated in by multiple terminal installations is single as first Member functions, which establishes the terminal installation and by exhaling when receiving call signal from terminal installation The communication session that the terminal installation of the specified communication counterpart of sound signal is participated in is called, between the terminal installation for participating in communication session Mutually forwarding voice signal.First unit includes: second unit, will participate in the terminal installation of original communication session receiving When being appointed as the call signal of communication counterpart, the calling of original communication session and this is determined based on precedence information The priority of the new communication session to be established of voice signal；And third unit, it is original in the priority ratio of new communication session Communication session priority it is high in the case where, the terminal installation of original communication session will be participated in from original communication session Removal, makes it participate in new communication session.

In trunking method of the invention, by having the network communication communicated via network with multiple terminal installations The control unit of the relay of the storage unit of the precedence information for the communication session that portion and storage are participated in by multiple terminal installations, comes It executes the first process: when receiving call signal from terminal installation, establishing the terminal installation and by ring tone message The communication session that the terminal installation of number specified communication counterpart is participated in mutually forwards between the terminal installation for participating in communication session Voice signal.First process includes: the second process, is appointed as leading to by the terminal installation for participating in original communication session receiving When believing the call signal of other side, the call signal of original communication session and this is determined based on precedence information The priority of the new communication session to be established；With third process, in the original communication meeting of the priority ratio of new communication session In the case that the priority of words is high, the terminal installation for participating in original communication session is removed from original communication session, is made It participates in new communication session.

Control unit and first unit can suitably establish terminal installation and another there are also during first Single communication session that a terminal installation is participated in, belong to team communication session that the terminal installation of preset group participates in, And the overall communication session that the multiple terminal installation that can be communicated all is participated in.Priority storage unit can store each form Communication session precedence information.

Control unit and first unit can be within given times from participation communication session also during first Any one terminal installation cancels the communication session when not receiving voice signal.

Control unit and first unit can be new communication meetings in the communication session of cancellation also during first In the case that words and original communication session are not yet cancelled and (survive), make the end removed from original communication session End device participates in original communication session again.

Sound communication system of the invention has the above-mentioned relay that is in communication with each other via communication network and more A terminal installation.Terminal installation has: terminal network communication unit is communicated via communication network with relay；And end Control unit is held, terminal network communication unit will be utilized with the voice signal for carrying out specified information to the terminal installation of communication counterpart And it is sent to relay.

Terminal installation can be also equipped with push to talk (PTT) circuit, and terminal network communication unit is in the connection phase in ptt switch Between, voice signal is sent to relay, and independently receive with the on/off of ptt switch from relay and send The voice signal come.

Network can have multiple access points of WLAN (LAN), the terminal network communication unit of terminal installation via Any one access point and with network connection.

Invention effect

According to the present invention, by connecting relay via communication network and as the terminal installation of communication equipment, and So that the management of the priority and the mutual communication of terminal installation communicated in relay side, thus, it is possible to fill in relaying It sets side and is immediately switched to the high communication of priority together.

Detailed description of the invention

Fig. 1 is the composition figure of the sound communication system as embodiments of the present invention.

Fig. 2 is the block diagram of transceiver as terminal installation.

Fig. 3 is the figure for indicating an example of composition of voice data packet.

Fig. 4 is the block diagram of server unit.

Fig. 5 A is the figure for indicating the terminal table set in server unit.

Fig. 5 B is the figure for indicating the group's table set in server unit.

Fig. 5 C is the figure for indicating the mixing table set in server unit.

Fig. 5 D is the figure for indicating the priority table set in server unit.

Fig. 6 A is the figure for indicating the mixing table set in server unit.

Fig. 6 B is the figure for indicating the mixing table set in server unit.

Fig. 6 C is the figure for indicating the mixing table set in server unit.

Fig. 6 D is the figure for indicating the mixing table set in server unit.

Fig. 6 E is the figure for indicating the mixing table set in server unit.

Fig. 7 is the flow chart for indicating the movement of transceiver.

Fig. 8 A is the flow chart for indicating the movement of server unit.

Fig. 8 B is the flow chart for indicating the movement of server unit.

Fig. 9 is the flow chart for indicating the registration process executed by server unit.

Specific embodiment

Referring to attached drawing, sound communication system of the invention is illustrated.Fig. 1 is the sound as embodiments of the present invention The composition figure of sound communication system.In the sound communication system, multiple terminal installations 14 utilize the Wireless LAN (local of Wi-Fi etc. Net) it 16 communicates with each other.Terminal installation 14 is in the approximate shape of Portable transceivers with wireless communication, such as Fig. 2 institute Show have PTT (push to talk) switch 220.For in terms of the function, terminal installation 14 is received via wireless access point (AP) 13 The Wireless Communication Equipment of sounding sound data packet.Server unit 11 as relay is to multiple terminal installations 14 via having Gauze network 15 and being in communication with each other for Wireless LAN 16 are relayed.In addition, hereinafter, cable network 15 and Wireless LAN 16 is total Referred to as network 17.

Terminal installation 14 can execute that single communication, team communication, overall communication (exhale by entirety via server unit 11 Cry) form communication.In single communication, specified communication counterpart (other terminal installations 14) comes 1 pair of 1 ground and communicates.? In team communication, communicated with the terminal installation 14 for belonging to preset group.In overall communication, and it is connected to network The 17 all terminal installations 14 that can be communicated are communicated.The terminal installation 14 that user can operate oneself to communicate shape from these Desired form is selected in formula.Server unit 11 establishes above-mentioned any form according to the calling from terminal installation 14 Communication session.In addition, setting priority to the communication session of each form.Even participating in the terminal of certain communication session Device 14, in the case where establishing the higher communication session comprising the present apparatus of priority, the communication session participated in also can It is switched to the high communication session of the priority.Details are aftermentioned.

When terminal installation 14 is connect with network 17, server unit 11 sends setting data to the terminal installation 14, will The terminal installation 14 is arranged to the state of communication.Setting data transmitted by server unit 11 are, for example, the terminal installation 14 Terminal number, the more new procedures etc. that can be communicated.

As cable network 15, it is able to use LAN, internet of Ethernet (registered trademark) etc..In cable network 15 In comprising being able to carry out safe communication by using VPN (Virtual Private Network) in the case where internet.In addition, conduct Wireless LAN 16 can meet the communication mode etc. of IEEE802.11 using Wi-Fi etc..Terminal installation 14 and wireless access point 13 It is communicated with the communication mode of the Wireless LAN 16.

Wireless access point 13 is provided with multiple.Each wireless access point 13 is respectively arranged at the different buildings of such as mansion Layer, different rooms etc..Thereby, it is possible to estimate the terminal installation according to which wireless access point 13 is belonged under terminal installation 14 Which floor/room 14 be located at.

Managing device 12 is connect with cable network 15.Managing device 12 is by being mounted with the individual calculus mechanism of management program At.Managing device 12 accesses server unit 11 according to the operation of manager, and Fig. 5 A, Fig. 5 B are set in server unit 11 Shown in table etc..In addition, managing device 12 is also functioned as 1 terminal installation, it is able to carry out and other terminal installations 14 communication.

Fig. 2 is the block diagram of terminal installation 14.As described above, terminal installation 14 is via Wireless LAN in terms of the function Wireless access point (AP) 13 receive and dispatch the Wireless Communication Equipment of voice data packet.20 controlling terminal device 14 of control unit moves Make, is made of microprocessor.Control unit 20 has the storage unit 21 for storing various data.It stores in the storage unit 21 from service The setting data that device device 11 is downloaded.Operation portion 22, display unit 23, voicefrequency circuit 24 and wireless are connected on control unit 20 LAN communication portion 25.The key switches such as including ptt switch 220 of operation portion 22, input the operation signal after accepting the operation of user To control unit 20.Display unit 23 includes liquid crystal display.It shows by the operation of user and selects logical on liquid crystal display Believe identiflication number, the identiflication number of communication counterpart of incoming call etc. of other side.

Voicefrequency circuit 24 has microphone 240 and loudspeaker 241.Control unit 20 carries out the voice data packet received Voicefrequency circuit 24 is inputed to after decoding.The decoded audio signal is transformed to analog signal and from loudspeaker by voicefrequency circuit 241 outputs.Voicefrequency circuit 24 inputs to control unit 20 after will being digital signal from the transform acoustical signals that microphone 240 inputs. Digital audio and video signals progress voice data Bao Huahou is inputed to wireless LAN traffic portion 25 by control unit 20.Wireless LAN traffic portion 25 have to meet the circuit that the communication mode of IEEE802.11 carries out wireless communication.It wireless LAN traffic portion 25 will be from control unit The data packet of 20 inputs is sent to wireless access point 13, and the data packet received from wireless access point 13 is inputed to control Portion 20.

If user makes a sound while pressing ptt switch 220 to microphone 240, terminal installation 14 is by the sound Signal edit is the transmission of voice data Bao Houxiang server unit 11.Voice data packet is in composition as shown in Figure 3.In sound number It include destination IP address (destination address) and transmission source address (sender according to the stem of packet address).In data subject, forwarding target terminal number is contained together with the voice signal after digitlization and is sent Source terminal number.Forwarding target terminal number is the identiflication number of communication counterpart (target device).The identification of communication counterpart Number is terminal number (single communication), small group # (team communication) or all numbers (overall communication).Although from terminal The destination for the voice data packet that device 14 is sent is server unit 11, but voice signal is ultimately destined for communication counterpart Terminal installation 14.If server unit 11 receives voice data packet, data subject, Xiang Tong are taken out from the voice data packet Believe that the terminal installation 14 of other side forwards voice signal (voice data packet).The identiflication number of communication counterpart be small group # and In the case where entirety number, voice signal is forwarded to the multiple terminal installations 14 for becoming communication counterpart.That is, in the feelings of team communication Under condition, voice signal is forwarded to the multiple terminal installations 14 for belonging to the group.In addition, overall communication (entirety number) the case where Under, voice signal is forwarded to all terminal installations 14 that can be communicated.

When forwarding the voice signal, creation will forward the IP address of the terminal installation 14 of target as with sending target Location, using the IP address of server 11 as the new voice data packet of transmission source address.In the data subject of the new data packet The forwarding for including in the data subject for the voice data packet that the forwarding target terminal number for including is received with server unit 11 Target terminal number is identical.Transmission source terminal number can be removed, and the sound received with server unit 11 can also be enclosed Transmission source terminal number in sound data packet is identically numbered.

If the process more than concluding, terminal installation 14 is when ptt switch 220 is switched on, without the logical of such as SIP process Believe establishment process, the knowledge that attached communication counterpart from the voice signal that microphone 240 inputs is sent in server unit 11 Not Bian Hao after voice data packet.The voice signal is transmitted to identiflication number the communication pair that identifies by server unit 11 Side.In this way, starting to communicate by sending voice data packet (RTP data packet), therefore user's energy in the sound communication system It is enough almost simultaneously to start to communicate with the connection of ptt switch 220 is made, it can be with such as identical with the transceiver of previous wireless communication Use feeling is communicated.In order to realize such use feeling, the management of IP address, group of each terminal installation 14 etc. and The forwarding of voice signal is carried out by server unit 11.

Terminal installation 14 not only with ptt switch 220 but also has VOX circuit.So-called VOX circuit is based on Mike The input level of wind 240 and its duration determine whether to have input call sound (voice signal), and be determined as it is defeated Device is switched to the circuit of transmission state (ptt switch connection) in the case where having entered call sound.Terminal installation 14 can be used VOX circuit replaces ptt switch 220 or is used together VOX circuit with ptt switch 220 to carry out sending cutting for on/off It changes.In addition, the transceiver of general wireless communication is the received simplex mode that can not carry out wireless signal in the state of transmission. On the other hand, terminal installation 14, can due to receive and dispatch voice signal via the voice data packet communication of Wireless LAN 16 The reception of the parallel transmission for carrying out voice data packet and sound data packet.Terminal installation 14 utilizes the function, can be realized simultaneously The communication of the parallel full duplex mode sent and received for carrying out voice signal.But, terminal installation 14 passes through ptt switch 220 Or VOX function, only voice data packet edit/send in the call sound for having input sending object, so that even if It can not also continue to send noiseless voice data packet in the case where carrying out full-duplex communication.

The sound that server unit 11 will include from the voice data packet that terminal installation 14 receives via network 17 Signal is transmitted to the terminal installation 14 of communication counterpart via network 17.In the case where team communication, voice signal is forwarded To the multiple terminal installations 14 for belonging to the group.In the case where team communication or overall communication, multiple users can be same sometimes Shi Fayan and send out voice signal simultaneously from multiple terminal installations 14.In this case, server unit 11 is multiple to these Voice signal is mixed and is edited new voice signal, which is transmitted to each end as voice data packet End device 14.In addition, mixing is set as: being carried out by each terminal installation 14, and voice signal transmitted by the present apparatus will not It returns to come included in mixed sound.That is, being directed to the terminal installation 14 of not sent voice signal, forward sound to the institute received Sound signal carries out mixed signal will be transmitted by the terminal installation 14 for the terminal installation 14 for sending out voice signal Voice signal excludes, and forwards after mixing to voice signal in addition to this.As a result, at the end for having sent voice signal The echo of voice signal transmitted by the present apparatus is not generated in end device 14.

Fig. 4 is the block diagram of server unit 11.Server unit 11 has control unit 30, storage unit 31 and network communication Portion 32.Storage unit 31 is constituted such as by hard disk, RAM, the setting number of storage various tables shown in fig. 5, each terminal installation 14 According to etc..Setting, the mixing of voice signal etc. of the progress terminal installation 14 of control unit 30.The control of network communication unit 32 and cable network 15 communication.

Fig. 5 A, Fig. 5 B, Fig. 5 C and Fig. 5 D are the figures for the table being arranged in the storage unit 31 for indicate server unit 11.

Fig. 5 A is the figure for indicating terminal table 301.Terminal table 301 is that server unit 11 carries out pipe to terminal installation 14 The table of reason.Each terminal installation 14 is identified with the identiflication number (terminal number) that is respectively a uniquely assigned.In terminal table Activation tagging is stored by each terminal number in 301 and sets the preservation address of data.Activation tagging is to indicate terminal Device 14 connect with network 17 and accesses server unit 11 and receive registration and various data based on server unit 11 Downloading label, that is, be to indicate to complete registration and the label that can communicate.Activation tagging is completed eventually by server unit 11 It is set when the registration of end device 14.Setting data are, for example, the more new data (firmware) of program, the group belonging to oneself, are permitted Perhaps the telephone directory etc. that other groups communicated are recorded.

When terminal installation 14 is connect with network 17, server unit 11 is communicated to carry out the end with terminal installation 14 The registration of end device 14.In turn, at the time of hereafter appropriate, server unit 11 is communicated to update with terminal installation 14 The registration of the terminal installation 14.At the time of so-called hereafter appropriate, the e.g. wireless access point that connects at regular intervals 13 whens being switched equal.

User is when selecting communication counterpart, operating terminal device 14, and display unit 23 is made to show the candidate volume of communication counterpart Number.The candidate number of so-called communication counterpart is the terminal number of the terminal installation 14 of above-mentioned activation, is allowed to the small of communication Group #.

Fig. 5 B is the figure for indicating group's table 302.Group's table 302 is that server unit 11 is managed use to group Table.Each group is identified with the identiflication number (small group #) that is respectively a uniquely assigned.By each small in group's table 302 Group and store the small group # and belong to the terminal number of the terminal installation 14 (affiliated terminal installation) of the group.Belong to The quantity of the terminal installation 14 of group is 1 or more.By by manager's operation management device 12 come to server unit 11 set these terminal tables 301 and group's table 302.

Fig. 5 C is the figure for indicating mixing table (session table) 303.Mixing table 303 is 11 pairs of communication meetings of server unit Talk about the table being managed.So-called communication session is multiple terminal installations 14 by server unit 11 as relay Between communications status.Mixing table 303 has multiple rows, and the information of a communication session is stored in each row.Server unit 11 exists When receiving voice signal (voice data packet) from terminal installation 14, judge which the voice signal is referring to mixing table 303 The voice signal of a communication session.

Communication session is for example handled by process below.Communication session foundation i.e. mix table 303 setting, from Terminal installation 14 receives the initial call data packet when progress for wanting to set up communication session.Once (such as several seconds) Sounding sound is divided into short (being 20 milliseconds in the embodiment) voice data packet to receive and dispatch.In addition, in a communication session, It can be sent out from other terminal installations for the sounding sound of the return of certain sounding sound.The hair of first sounding sound and return The interval (mute time) of acoustic sound is 0 second to several seconds degree.The retention time of communication session is set in general communication Mute time maximum value more than.In addition, the process of above-mentioned basic communication session single communication, team communication and It is common in the form of ownership of overall communication, but the setting process for mixing table 303 is different in each communication form.

In mixing table 303, for each communication session, it is provided with session number, calling terminal number, participates in terminal volume Number, additional terminal number, the project for excluding terminal number and remaining retention time (T1).Session number is to identify the communication meeting The number of words.Calling terminal number is the end for having sent the initial voice data packet (call data packet) of the communication session The terminal number of end device 14 (calling terminal device).As long as session number is uniquely worth i.e. for each communication session Can, in this embodiment, numbered using the forwarding target terminal being written in above-mentioned call data packet.As session number And the communication session for registering terminal number (such as " 19 ") is the communication session (single communication session) individually communicated.It is single logical Letter refers to 1 pair 1 of the single mutual communication of terminal installation 14.Small group # (such as " G1 ") is registered as session number Communication session be team communication communication session (team communication session).Team communication refers to that multiple terminal installations 14 are (general It is 3 or more) it is exchanged with each other the communication of voice signal.In turn, all numbers (such as " A ": ginseng is registered as session number According to Fig. 6 C) communication session be overall communication communication session (overall communication session).Overall communication refers to be connect with network 17 All terminal installations 14 that can be communicated be exchanged with each other the communication of voice signal.

Participating in terminal number is to participate in the guide look of the terminal number of terminal installation 14 of the communication session.When from participation end Registered in the number of end terminal number certain terminal installation 14 send out voice data packet in the case where, control unit 30 is by the sound The voice signal of data packet is transmitted to other terminal installations 14 that terminal number is registered in participating in terminal number, to realize Being in communication with each other between participation terminal installation.

In the case where team communication session, participating in terminal number becomes the terminal number of calling terminal device and belongs to In the terminal number of the terminal installation 14 for the group for being designated as communication counterpart.But, due to belonging to the group not The terminal installation 14 of activation, the terminal installation 14 for carrying out other single communication sessions can not participate in the team communication session, Therefore the terminal number of these terminal installations 14 is excluded and (is registered in the column for excluding terminal number) from participation terminal number. In addition, in the case where calling terminal device is terminal installation 14 for being not belonging to the group, that is, had called certainly in terminal installation 14 In the case where group other than group belonging to body, the terminal number of the terminal installation 14 is also registered as participating in terminal number. Meanwhile as the addition terminal installation for temporarily having carried out member's registration, terminal number is also registered to additional terminal number In column.That is, even if calling terminal device is not belonging to group, also being filled with the terminal for belonging to the group in the team communication session It is processed similarly as the terminal installation 14 (participating in terminal installation) for participating in the communication session to set 14.

In the case where overall communication session, participating in terminal number becomes the terminal number of calling terminal device and can lead to The terminal number of all terminal installations 14 of letter.It is identical as above-mentioned team communication about exclusion terminal number.In addition, not stepping on Remember additional terminal number.

In the case where single communication session, as participate in terminal number, register calling terminal device terminal number and The terminal number of the terminal installation 14 of communication counterpart.Due to being One-to-one communication, the additional terminal number of non-registration and row Except terminal number.

In addition, additional terminal number, the column for excluding terminal number are not required among the project of mixing table 303. The management of table is only also able to achieve by the addition of the terminal number for the column for participating in terminal number, exclusion.

In addition, the retention time is not cancel the communication in the state of not sending out voice data packet from participation terminal installation Session and the time that it is kept.The retention time of each communication session in server unit 11 is for example set to 30 Second.The retention time timer (TS) of mixing table 303 is the process that the retention time is counted in not sent sound data packet out Timer.Retention time timer TS in the processing (referring to Fig. 7) of control unit 30, if it is not sent go out sound data packet if into Row countdown, and if having sent out voice data Bao Ze and being reset to 30 seconds.Not from participation terminal dress in due to 30 seconds It sets and sends out voice data packet in the case that timer TS has timed out, which is cancelled, from mixing table 303 Leave out the information of the communication session.

In above example, in team communication session, in the project of the participation terminal installation of mixing table 303, remove Registration calling terminal device is also added other than affiliated terminal installation, and for affiliated terminal installation is inactive end End device 14 and the terminal installation 14 for carrying out other communication sessions are excluded.However, additional be registered in participates in terminal dress Terminal installation 14 in the project set and the terminal installation 14 being excluded are not limited to these situations.

If the terminal installation 14 for participating in the low communication session (such as team communication session) of priority starts other halfway The high communication session of priority (such as single communication session), then at the time point by the participation from the low communication session of priority It is excluded in terminal installation.That is, the terminal number of the terminal installation 14 is moved to exclusion terminal number from the column for participating in terminal number Column.

In addition, being also required to the timing retention time in each terminal installation 14 to continue communication session.Terminal installation 14 retention time (T1) is shorter than the retention time of server unit 11 (TS=30 seconds), such as sets 5 seconds to timer T1.If It has passed through 5 seconds after user disconnects ptt switch 220, even if then the communication session is maintained in server unit 11, also can Start other communication sessions by given operation.

It is divided to furthermore it is possible to which table 303 will be mixed by mixing table in executing and to keep out of the way two tables that table constitutes.It holds The table that table is the session that registration is currently being mixed is mixed in row, is formed on the memory of high speed.Communicate (sound The transmitting-receiving of data packet) session interrupted with the short time of 200 milliseconds of degree turned note to keeping out of the way in table, the quilt in keeping out of the way table Maintain retention time (T1).If communication (transmitting-receiving of voice data packet), the communication meeting has occurred again in the retention time Turned note mixes table into execution to words again, for mixed execution.Thereby, it is possible to make each terminal installation 14 from mixing table 303 release shifts to an earlier date.

Fig. 5 D is the figure for indicating priority table 304.Form (calling in priority table 304, with each communication session Classification) establish the priority for having accordingly stored communication.Priority is set as being worth smaller for example by numerical representation method, and priority is got over It is high.In the case where there is the foundation request for the new communication session of the terminal installation 14 in communication session, server unit 11 in order to judge whether that the current communication session by the terminal installation 14 switches to new communication session and use priority. That is, in the case where the priority of new communication session is higher than the priority of current communication session, the communication of terminal installation 14 Session is switched to the high new communication session of priority.In addition, the priority table is also by the management of operation management device 12 Person sets.Hereinafter, being illustrated using the example for mixing table 303 shown in Fig. 6 A, Fig. 6 B and Fig. 6 C.

Such as illustrate following situations: in the team communication session for having registered session number " G1 " as shown in figure 6 a In the state of, the terminal installation 14 of terminal number " 20 " has sent the terminal dress for terminal number " 4 " to server unit 11 Set the request (call data packet) of 14 single communication session.The terminal installation 14 of terminal number " 4 " it is as shown in Figure 6A that Sample is participating in team communication session.Server unit 11 is filled referring to priority table 304 for the terminal of terminal number " 4 " Set the priority " 2 " of priority " 3 " and new single communication session that 14 carry out the current team communication session of comparison.Compare at this In, server unit 11 is judged as that the priority of new communication session (single communication session) is high, by the terminal of terminal number " 4 " The communication session of device 14 switches to single communication session from team communication session.As a result, as shown in Figure 6B, in mixing table New communication session of the registration using terminal number " 4 " as session number in 303.Also, it is logical in the group of session number " G1 " Believe in session, participates in the terminal number " 4 " registered in the project of terminal and be moved in the project for excluding terminal.

In addition, about team communication session above, although the terminal installation 14 of terminal number " 4 " is excluded, also Multiple terminal installations 14 are registered as participating in terminal.Therefore, team communication session stepping on to mixing table 303 above can be maintained Note.It is however also possible to cancel registration (terminating communication session).

Then, such as illustrate following situations: logical in the group for having registered session number " G1 " as shown in figure 6 a In the state of believing session, the terminal installation 14 of terminal number " 10 " has sent the request of overall communication session to server unit 11 (call data packet).Overall communication session is object with all terminal installations 14 that can be communicated, therefore as session number All terminal installations 14 of the participation terminal of the team communication session of " G1 " become the object of the overall communication.Therefore, it services Device device 11 compares referring to priority table for the terminal installation 14 of terminal number " 1 ", " 2 ", " 3 ", " 4 ", " 5 ", " 23 " The priority " 3 " of current team communication session and the priority " 1 " of new overall communication session.Also, server unit 11 It is judged as that the priority of overall communication session is high, the communication session of above-mentioned terminal installation 14 is switched from above-mentioned team communication session To overall communication session.That is, as shown in Figure 6 C, registration is using terminal number " A (entirety number) " as meeting in mixing table 303 Talk about the new communication session of number.Also, the team communication session of session number " G1 " is all switched due to all participation terminals Extremely above-mentioned overall communication session, therefore it is cancelled registration (team communication conversation end).Further, since not being that state of activation (swashs Living to mark: the terminal installation 14 of terminal number " 100 " OFF) not can be carried out communication, therefore be registered as excluding terminal.

In turn, illustrate following situations: in the single communication session for having registered session number as shown in Figure 6 D " 6 " In the state of (session group), the terminal installation 14 of terminal number " 5 " has sent small group # " G1 " to server unit 11 The request (call data packet) of team communication session.The terminal installation 14 for the terminal number " 1 " for including in group " G1 " is such as Single communication session is being participated in shown in Fig. 6 D.Therefore, server unit 11 is referring to priority table, for terminal number " 1 " Terminal installation 14 come the priority " 2 " of the current single communication session of comparison and the priority " 3 " of new team communication session. Server unit 11 is judged as that the priority of single communication session is high, to maintain working as the terminal installation 14 of terminal number " 1 " Preceding single communication session.In addition, due to the 14 (terminal of terminal installation of other communication counterparts as above-mentioned team communication session Number " 2 ", " 3 ", " 4 ") it is able to carry out communication (being not in other communication sessions), therefore it is able to carry out above-mentioned team communication meeting Words.So as illustrated in fig. 6e, registering the new communication session using terminal number " 1 " as the session number " G1 " for excluding terminal.

In addition, in the priority situation identical with the priority of new communication session of current communication session, also not Switch to new communication session.It is only switched in the case where priority height, it is also possible to be the equal priority the case where Under also switch to new communication session.In addition, the priority of priority table 304 is not particularly limited to the priority, it can also Single communication session is set as priority 1.

Fig. 7 is the flow chart for the communication control processing for indicating to be executed by the control unit 20 of terminal installation 14.The processing every 20 milliseconds are repeatedly executed.In this process, according to the on/off of ptt switch 220, voice data packet (RTP data packet) It receives, is inferred to the state (status) of current communication.Here, label, timer class used in the flow chart are as follows.

PTT: being the abbreviation of push to talk switch (ptt switch) 220, but be not limited to the on/off of ptt switch 220, On/off also comprising the transmission signal based on VOX circuit.

NC0: identiflication number (the single number/small group #/entirety for the communication counterpart selected by the operation of user Number)

NC1: using session number, the number identified to communication session in execution, the initial of communication session is established Voice data packet in the identiflication number of communication counterpart that is written (single number/small group #/entirety is numbered).

FC: communication session marks (indicating that the terminal installation 14 is participating in the label of communication session)

FT: label (indicating the label in the transmission in voice data packet or in reception) in communication

T1: retention time timer (carried out the timer of timing to retention time (5 seconds) of communication session)

S10~S20 is the transmission management processing of voice data packet.Control unit 20 judges the state (S10) of ptt switch 220. In the case where ptt switch 220 is in and connects, control unit 20 makes processing advance to S11.220 access failure of ptt switch the case where Under, so that processing is advanced to S20.In addition, the connection for being set as ptt switch includes the transmission based on VOX in the explanation of the flow chart The connection of function.

In S11, control unit 20 judges whether communication session flag F C is set.It is not set in communication session flag F C In the case where (being no in S11), be call number by the voice data packet that the connection of this ptt switch 220 creates According to packet.Control unit 20 is to communication session flag F C and indicates receiving and dispatching label FT progress in the communication in voice data packet Set (S12).Control unit 20 turns the communication counterpart number NC0 selected by user to be denoted as communication session number NC1 (S13), And communication session number NC1 is written into voice data packet obtained from data subject together with voice signal and is sent to clothes It is engaged in device device 11 (S14).By the transmission of the call data packet, the communication session by server unit 11.Control unit 20 after being reset to retention time timer T1 5 seconds (S15), and the voice data packet for advancing to processing after S30 connects The processing of closed tube reason.

In the case that communication session flag F C has been set in S11 (being yes in S11), in the judgement communication of control unit 20 Whether flag F T is set, that is, whether judgement is current is in the transmission or reception of voice data packet (S16).In the communications In the case that flag F T is not set (being no in S16), control unit 20 will mark FT set (S17) in communication.Processing by S11 → S16 → S17 advance is to start the new voice data packet (call of user in the state that the communication session having begun is maintained Sound) transmission the case where.In S18, judgement is to continue with the communication session being had begun and returns to the communication session This voice data packet (being no in S18), or be detached from from communication session before and send this to new communication counterpart Voice data packet, establish other new communication sessions (being yes in S18).The judgement is for example according to whether carried out at this Ptt switch 220 be that the operation of user before will turn on judges such as the selection operation of communication counterpart.? In the case where the selection operation for having carried out new communication counterpart by user, in the processing of S19, is established and selected for this Communication counterpart new communication session processing.

In addition it is also possible to make: execute above-mentioned S18 judgement processing, according to priority and communication session is switched it Border returns to the communication session before will being switched.For example, making it possible to be communicated again from the operation portion 22 of terminal installation 14 Operation, user by carry out this again traffic operation and execute return it is above-mentioned will be switched before communication session switching at Reason.In this case, terminal installation 14 detects the operation communicated again, to be judged as more new communication session (being yes in S18).In addition, terminal installation 14, which detects, has carried out traffic operation again, the communication before will being switched will be returned The request signal of session, which is attached in voice data packet, is sent to server unit 11, then, receives the voice data packet Server unit 11 execute return will be switched before communication session processing.

In the case where more new communication session (being yes in S18), control unit 20 numbers the communication counterpart selected at this time NC0 turns to be denoted as communication session number NC1 (S19), and processing is made to advance to S14.In the communication meeting for continuing to have begun In the case where words (being no in S18), control unit 20 makes processing directly continue to S14 from S18.

In the case that ptt switch 220 is not turned in S10 (being no in S10), control unit 20 will mark FT to answer in communication Position (S20).In addition, flag F T maintains the statusquo in the case where being reset in the communications.Then, control unit 20 makes to handle Advance to the reception management processing of the voice data packet after S30.

Control unit 20 judges whether to have received voice data packet via network 17 in S30.Receiving sound number In the case where packet, control unit 20 makes processing advance to S31.In the case where not receiving voice data packet, processing is made to advance To S40.

In S31, control unit 20 judges whether communication session flag F C is set.It is not set in communication session flag F C In the case where (being no in S31), be judged as that this is established new communication session and has sent out its initial voice data packet, and And FT set (S32) will be marked in communication session flag F C and communication.FT label is to indicate to be currently to voice data packet Label in transmitting-receiving.Control unit 20 turns the communication counterpart for including in voice data packet number to be denoted as communication session number NC1 (S33).Voice data packet is exported and gives voicefrequency circuit 24 (S34) by control unit 20, and retention time timer T1 is reset to 5 seconds (S35)。

In the case that communication session flag F C has been set in S31 (being yes in S31), control unit 20 judges this Include in voice data packet communication session number whether (S36) identical as communication session number NC1.Under identical circumstances (being yes in S36), control unit 20 correspond to the reception of this voice data packet and will mark FT set (S38) in communication.This Outside, flag F T maintains the statusquo in the case where being set in the communications.Then, control unit 20 makes processing advance to S34.

It is judged as in the case that communication session number is different (being no in S36) in S36, control unit 20 is by this sound The communication session number for including in data packet turns to be denoted as communication session number NC1 (S37), and processing is made to advance to S38.Processing is pressed S36 → S37 advance is the situation for having carried out the switching of the communication session priority-based executed by server unit 11.

In the case where not receiving voice data packet in S30 (being no in S30), control unit 20 judges that communication session marks Whether FC is set (S40).In the case where communication session flag F C has been set (being yes in S40), control unit 20 executes S41 Processing later.In the case where communication session flag F C is not set (being no in S40), control unit 20 is directly ended processing.

In S41, control unit 20 judges whether label FT is set in communication.The feelings that flag F T has been set in the communications Under condition (being yes in S41), control unit 20 is directly ended processing.(it is in S41 in the case that flag F T is not set in the communications It is no), that is, in the case where the state that flag F T is reset in the communications but communication session flag F C has been set, control unit 20 is right Retention time timer T1 carries out counting the operation (20 milliseconds of amounts) (S42) that subtracts 1.Then, judge to protect by the subtraction Hold whether time timer T1 has become 0 (S43).In the case where the retention time, timer T1 became 0 (being yes in S43), Communication session flag F C is resetted (S44) to cancel communication session by control unit 20.Retention time timer T1 is also in S43 In the case where greater than 0 (being no in S43), control unit 20 is directly ended processing.

Fig. 8 A and Fig. 8 B are the flow charts for indicating the movement of server unit 11.Fig. 8 A illustrates that voice data packet receives When processing.Fig. 8 B illustrates mixing table administrative office reason.

In fig. 8 a, if receiving voice data packet, control unit 30 judges with transmission source terminal number and communication pair Whether side's number has been registered in mixing table 303 (S50) come the communication session identified.Mixing has been registered in communication session In the case where table 303 (being yes in S50), participation terminal number of the control unit 30 based on mixing table 303, the sound that will be received The voice signal for including in sound data packet is transmitted to the terminal installation 14 (S56) for participating in communication session.Then, table will be mixed The retention time timer TS of 303 communication session is reset to 30 seconds (S57).

It is unregistered in the case where mixing table 303 (being no in S50) in the communication session of the voice data packet received, That is, in the case where the voice data packet is call data packet, by the new communication meeting based on the call data packet Words are registered in mixing table 303 (S51).In the following, illustrating the registration process using Fig. 9.

Fig. 9 is the flow chart for indicating the registration process executed by server unit 11.The processing is held in the S51 of Fig. 8 A Row.Session number (the single number/small group #/entirety that control unit 30 is included according to the call data packet received Number) come be selected to the new communication session participations terminal candidate a terminal installation 14 (number of terminal installation) (S70).Then, control unit 30 judges that the terminal installation 14 is current whether in (S71) in communication session.Specifically, according to Whether it is contained in the communication session for being registered in mixing table 303 and participates in terminal to judge.It is not in communication in S71 In the case where (being no in S71), which is determined as the participation terminal (S72) of new communication session by control unit 30, Processing is set to advance to S75.It on the other hand, is in the case where in communication (being yes in S71) in S71, control unit 30 judges Whether the priority of new communication session is higher than the current communication session (S73) of terminal installation 14.In new communication session In the case that priority is high (being yes in S73), control unit 30 makes processing advance to S72, which is determined as new The participation terminal of communication session.On the other hand, in the case that the priority of communication session new in S73 is low (being no in S73), The terminal installation 14 is determined as the exclusion terminal (S74) of new communication session by control unit 30, and processing is made to advance to S75.Then, Control unit 30 repeats above-mentioned processing, until for candidate all terminals dress of the participation terminal as new communication session Set 14 processing (being yes in S75) for being performed both by above-mentioned S70~S74.

In S75, in the case where for candidate all terminal installations 14 above-mentioned, processing terminate (being yes in S75), Control unit 30 determines whether the terminal installation 14 (S76) for being decided to be and participating in terminal.There is the terminal installation 14 for participating in terminal In the case of (being yes in S76), control unit 30 by the new communication session be registered in mixing table 303 in (S77), terminate at this Reason.In S77, the communication counterpart number (communication session number) of call data packet is registered as session number, the calling The terminal number of the terminal installation 14 of the transmission source of voice data packet is registered as calling terminal number.It is compiled as terminal is participated in Number, register the number and calling terminal number of the above-mentioned terminal installation 14 for being decided to be participation terminal.In addition, as excluding eventually End number registers the above-mentioned number for being decided to be and excluding the terminal installation 14 of terminal.In addition, inactive (activation tagging OFF) Terminal installation 14 number be also registered as exclude terminal number.In addition, not participating in the terminal installation 14 of terminal in s 76 In the case where (being no in S76), control unit 30 is regarded as that new communication session is invalid, without new communication session to mixture table The registration of lattice 303 terminates the registration process.

Then, control unit 30 returns to Fig. 8 A, and processing is made to advance to S52.In S52, control unit 30 judges above-mentioned new lead to Whether letter session is registered in mixing table.In the case where not being registered in mixing table (being no in S52), control unit 30 is regarded Make new communication session not setting up, terminates the processing when voice data packet receives.On the other hand, it is registered in S52 mixed In the case where conjunction table (being yes in S52), participation terminal number of the control unit 30 based on mixing table 303, the sound that will be received The voice signal of sound data packet is transmitted to the terminal installation 14 (S53) for participating in communication session.

Control unit 30 judges whether there is due to the communication session that this is established by from being registered in the logical of mixing table 303 Believe the terminal installation (S54) excluded in the participation terminal installation of session.That is, established before having been participated in based on priority etc. The terminal installation 14 of communication session becomes in the case where participating in the new communication session that this is established, and needs logical from what is established before It is removed in letter session.There are such terminal installation 14 (being yes in S54), control unit 30 updates other communication meetings It talks about (S55).Specifically, deleting the terminal installation 14 in the column of the participation terminal number for the communication session established before this Terminal number.The terminal number being excluded is turned note to the column for excluding terminal number.In addition, the terminal in the terminal installation 14 is compiled In the case where deleting in the column of the participation terminal number of number communication session all established before this, leave out the communication meeting Words.In this way optimize the participation terminal installation of communication session.If in S54 not by from be registered in mixing table 303 Communication session participation terminal installation in the terminal installation (being no in S54) that excludes, then when terminating the voice data packet and receiving Processing.

The mixing table administrative office reason of Fig. 8 B is repeated by regular (such as every 20 milliseconds).Control unit 30 is specified first Mix the communication session (S60) of the initial row of table 303.Control unit 30 makes the retention time timer TS of specified communication session It carries out counting the operation (20 milliseconds of amounts) (S61) that subtracts 1, judges whether become by subtraction retention time timer TS 0 (S62).In the case where the retention time, timer TS became 0 (being yes in S62), control unit 30 is regarded as the communication session It has been terminated that, the communication session of the row is left out into (S63).

Control unit 30 successively executes above processing until mixing until the final line of table 303 (S64, S65), thus into The management of row mixing table 303.

In the case where having carried out the processing of the end of communication session in S63, it can also make to have participated in the communication session Terminal installation 14 participates in other communication sessions halfway.For example, be the high communication session of priority in the communication session terminated, and And it participates in exist in the terminal installation 14 of the communication session and chosen from the low communication session of the priority established before In the case where terminal installation, the terminal installation 14 can be made to participate in the low communication session of original priority again and (certainly, only limited In the low communication session of the priority still continue the case where).In addition, even if having participated in the high communication of the priority that has terminated The terminal installation 14 of session belongs in the case where the low communication session of the priority established after the communication session (group), The terminal installation can be made from participating in the low communication session of the priority halfway.The case where carrying out such processing can be by following Mode is realized, that is, when having carried out the processing of the end of communication session in S63, the terminal dress of the communication session has been participated in search Whether the terminal number for setting 14 is registered in the exclusion terminal of the communication session in other continuation, excludes terminal being registered in In the case of, so that the terminal number is transferred to participation terminal.

As described above, connecting relay (service via communication network in sound communication system preferably Device device 11) and as communication equipment terminal installation 14, and make 11 side group of server unit in communication priority come Carry out the management of the mutual communication of terminal installation 14.Thereby, it is possible to be immediately switched to together preferentially in 11 side of server unit The high communication of grade.Therefore, switching the time it takes of communication session can be made shorter than previous.Moreover, the priority with communication Related information is managed by server unit 11, therefore user only updates server unit 11 by using managing device 12 Information related with priority can be using priority desired by user, so the more new job of priority is also easier. In addition, the communication is maintained in the same manner as other communications, therefore can be reliably after being switched to the high communication of priority Transmitting is wanted to pass to the content of communication counterpart.

In the above-described embodiment, the type of the communication session of single communication, team communication and overall communication is set Priority, but it is not particularly limited to this.For example, it is also possible to which the number to terminal installation 14 sets priority.For example, using The priority of the number of the terminal installation for belonging to certain post 14 is set to be set the volume of the terminal installation 14 than belonging to other posies Number the high composition of priority.Also, the high terminal device number of priority is calling terminal in new communication session In the case where number, even at being also switched to new communication session in other communication sessions.

In addition, in the above-described embodiment, the switching that communication session is carried out based on priority table, but not especially It is defined in this.For example, it is also possible to make it possible to from the operation portion 22 of terminal installation 14 carry out urgent call operation, user into The communication session gone in the case where the emergency call operation communication session high as priority.When operating urgent call Call data packet in add the information that transmitting is emergency, server unit 11 receives (storage) additional information Judge priority.

In the above-described embodiment, inactive terminal installation is arranged from communication session as terminal installation is excluded It removes, but its midway can also be made to participate in communication session at the time point that the terminal installation becomes activation.

In addition, in the above-described embodiment, participating in terminal in a part due to Priority Call and in communication session and having taken off In the case where from (being moved to new communication session), not to the participation terminal notification of the residue (without departing from) in above-mentioned communication session Above-mentioned a part participates in terminal and has disengaged from this case, but can also be notified.For example, the sound in above-mentioned communication session Synthesis informs the message sound for the meaning that above-mentioned a part of terminal installation 14 has disengaged to send i.e. in the voice signal of data packet It can.In turn, it can also be synthesized in the voice signal of the voice data packet of above-mentioned new communication session and inform above-mentioned a part eventually The message sound of the meaning that the communication session (affiliated) of end device 14 has changed is sent.

In addition, in the above-described embodiment, being immediately switched to the high new communication meeting of priority from current communication session Words, but it is not particularly limited to this.For example, if being in the peak for sending voice data packet in current communication session, New communication session is switched to after it can be waited to send.

In the above-described embodiment, the call data packet for being set to correspond to send out from terminal installation 14 is logical to establish Believe session, but it's not limited to that for the opportunity of communication session foundation.For example, it is also possible to be operated by manager by managing device 12 Table 303 is mixed come the foundation and cancellation of the group of conversating.Furthermore it is also possible to be carried out by managing device 12 described above The foundation and cancellation of extension team communication between group.Which be also able to achieve communication session blanket management and Flexible change.

Symbol description

11 server units (relay)

12 managing devices

13 wireless access point

14 terminal installations

20 (terminal installation) control units

30 (server unit) control units

32 network communication units

220 PTT (push to talk) switch

301 terminal tables

302 group's tables

303 mixing tables

304 priority tables

Claims

1. a kind of relay, which is characterized in that have:

Network communication unit is connect with communication network, and is communicated via the communication network with multiple terminal installations；

Control unit establishes the terminal installation and by the ring tone when receiving call signal from the terminal installation The communication session that the terminal installation of the specified communication counterpart of sound signal is participated in, the phase between the terminal installation for participating in the communication session Mutually forwarding voice signal；With

Storage unit stores the communication session currently established with the terminal installation for participating in the communication session and is established corresponding mixing The type of table and communication session is established corresponding priority table with priority,

The control unit receive by at least part for participating in the terminal installation of original communication session be appointed as communication pair When the call signal of side, new communication session and original communication are determined referring to mixing table and priority table The priority of session,

In the priority situation below that the priority of new communication session is original communication session,

I) new communication session is established；

Ii it) referring to the terminal installation as specified by new communication session and mixing table, determines as specified by new communication session Terminal installation in include original communication session participation terminal installation；

Iii the terminal installation as specified by communication session of the participation terminal installation of original communication session will) be removed as new The participation terminal installation of communication session so that it is participated in new communication session, sent to the participation terminal installation of new communication session Voice signal,

In the case where the priority of the original communication session of the priority ratio of new communication session is high,

I) new communication session is established；

Ii) by the terminal as specified by new communication session of a part of the participation terminal installation comprising original communication session Device, the participation terminal installation as new communication session make it participate in new communication session；

Iii) referring to terminal number and mixing table, the new communication meeting of original communication session participated in terminal installation is determined The participation terminal installation of words；

Iv) referring to the terminal installation as specified by new communication session and mixing table, the participation of original communication session is determined The participation terminal installation for the new communication session for including in terminal installation；

V) the participation terminal installation of new communication session is removed from original communication session, so that the sound of original communication session Frequency signal is not sent to the participation terminal installation of new communication session.

2. relay according to claim 1, which is characterized in that

The control unit suitably establish the single communication session that a terminal installation and another terminal installation participate in, belong to it is pre- The team communication session that the terminal installation of the group first set is participated in and the multiple terminal installation all participation that can be communicated Overall communication session,

The priority storage unit stores the precedence information of the communication session of each form.

3. relay according to claim 1, which is characterized in that

The control unit does not receive sound letter from any one terminal installation for participating in the communication session within given time Number when, cancel the communication session.

4. relay according to claim 3, which is characterized in that

It is the feelings that the new communication session and original communication session are not yet cancelled in the communication session of the cancellation Under condition, the control unit makes to participate in original communication again by the terminal installation removed from original communication session Session.

5. a kind of sound communication system has the relay and multiple terminal installations being in communication with each other via communication network, It is characterized in that,

The relay has:

Network communication unit is connect with the communication network, and is communicated via the communication network with multiple terminal installations；

I) new communication session is established；

V) the participation terminal installation of new communication session is removed from original communication session, so that the sound of original communication session Frequency signal is not sent to the participation terminal installation of new communication session,

The terminal installation has:

Terminal network communication unit is communicated via the communication network with the relay；With

Terminal control portion will utilize the terminal with the voice signal for carrying out specified information to the terminal installation of communication counterpart Network communication unit and be sent to the relay.

6. sound communication system according to claim 5, which is characterized in that

The terminal installation is also equipped with push to talk circuit,

The voice signal is sent in described by the terminal network communication unit during the push to talk circuit is in and connects After device, and the sound letter sent from the relay is independently received with the on/off of the push to talk circuit Number.

7. sound communication system according to claim 5, which is characterized in that

The network has multiple access points of WLAN,

The terminal network communication unit of the terminal installation via any one access point and with the network connection.

8. a kind of recording medium, record has a computer program, relay have via network and with multiple terminal installations into The communication session that the network communication unit of row communication and storage are currently established is established with the terminal installation for participating in the communication session The type of corresponding mixing table and communication session is established the storage unit of corresponding priority table, the meter with priority Calculation machine program makes the computer of the relay play following functions:

When receiving call signal from the terminal installation, establishes the terminal installation and referred to by the call signal The communication session that the terminal installation of fixed communication counterpart is participated in, the mutual forwarding sound between the terminal installation for participating in the communication session Sound signal,

Receiving the ring tone that at least part for participating in the terminal installation of original communication session is appointed as to communication counterpart When sound signal, the preferential of new communication session and original communication session is determined referring to mixing table and priority table Grade,

I) new communication session is established；

9. recording medium according to claim 8, which is characterized in that

The computer program makes the computer of the relay also play following functions: establishing terminal installation and another The team communication meeting that the single communication session of one terminal installation participation, the terminal installation for belonging to preset group are participated in The overall communication session that words and the multiple terminal installation that can be communicated all are participated in,

The storage unit stores the precedence information of the communication session of each form.

10. recording medium according to claim 8, which is characterized in that

The computer program makes the computer of the relay also play following functions: from described in participation within given time Any one terminal installation of communication session cancels the communication session when not receiving voice signal.

11. recording medium according to claim 10, which is characterized in that

The computer program makes the computer of the relay also play following functions: being in the communication session of the cancellation In the case that the new communication session and original communication session are not yet cancelled, make by from original communication The terminal installation removed in session participates in original communication session again.

12. a kind of trunking method is that the control unit of relay is performed trunking method, which has via network And communication session that the network communication unit that is communicated with multiple terminal installations and storage are currently established and participate in the communication meeting The terminal installation of words is established corresponding mixing table and the type of communication session is established corresponding priority with priority The storage unit of table, the trunking method be characterized in that,

I) new communication session is established；

13. trunking method according to claim 12, which is characterized in that

It establishes the single communication session an of terminal installation and the participation of another terminal installation, belong to preset group The overall communication meeting that the team communication session of terminal installation participation and the multiple terminal installation that can be communicated all are participated in Words,

14. trunking method according to claim 12, which is characterized in that

Cancelling when not receiving voice signal from any one terminal installation for participating in the communication session within given time should Communication session.

15. trunking method according to claim 14, which is characterized in that

It is the feelings that the new communication session and original communication session are not yet cancelled in the communication session of the cancellation Under condition, make to participate in original communication session again by the terminal installation removed from original communication session.